[ruby-core:96446] [Ruby master Feature#15373] Proposal: Enable refinements to `#method` and `#instance_method`

Issue #15373 has been updated by nobu (Nobuyoshi Nakada).


https://docs.google.com/document/u/1/d/1W_wrFsFxxU1MepA6HBpfl-9h-nLD8EBsgMsS7yTDvHE/pub

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Feature #15373: Proposal: Enable refinements to `#method` and `#instance_method`
https://bugs.ruby-lang.org/issues/15373#change-83370

* Author: osyo (manga osyo)
* Status: Closed
* Priority: Normal
* Assignee: 
* Target version: 
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Proposal enable refinements to `#method` and `#instance_method`.
It can be used in the following cases.

```ruby
# default call to #pp
module P2PP
  refine Kernel do
    def p obj
      pp obj
    end
  end
end

using P2PP

# call to Kernel.#pp
[1, 2, 3].map(&method(:p))
```

Also, when checking the defined position as follows, the `refine` place is reflected.


```ruby
module P2PP
  refine Kernel do
    def p obj
      pp obj
    end
  end
end

# Output to refine defined position
# Before
p method(:p).source_location
# => nil
p Kernel.instance_method(:p).source_location
# => nil

using P2PP

# After
p method(:p).source_location
# => ["../ruby/test.rb", 4]
p Kernel.instance_method(:p).source_location
# => ["../ruby/test.rb", 4]
```

I want `.:` operators to work.
https://bugs.ruby-lang.org/issues/13581

pull reqiest: https://github.com/ruby/ruby/pull/2034





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